Reference for Shabbat 271:7

אמר רבא אי הכי אדמיפלגי לענין טומאה וטהרה ליפלגי לענין אכילה

this is to include an eight-months' [animal],<span class="x" onmousemove="('comment',' I.e., a calf born in, the eighth month of bearing instead of in the usual ninth. ');"><sup>7</sup></span>